Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618935 | Tricyclic pyrazine compound and electrophotographic photoconductor comprising the same | Masayuki Shoshi, Yumi Ichikawa, Masayuki Koyano, Megumi Kawahara | 1997-04-08 |
| 5492784 | Positively-chargeable single-layered type electrophotographic photoconductor | Masao Yoshikawa, Masayuki Shoshi, Tetsuro Suzuki, Masakatsu Shimoda, Megumi Kawahara +3 more | 1996-02-20 |
| 5460909 | Pyrazine compound and electrophotographic photoconductor comprising the same | Masayuki Shoshi, Yumi Ichikawa, Masayuki Koyano, Megumi Kawahara | 1995-10-24 |
| 5326678 | High dielectric polymeric optical recording medium | Akio Kojima, Takeo Yamaguchi, Masao Yoshikawa, Isamu Shibata | 1994-07-05 |